Test Catalog Search Home Test Catalog Search Testing Choices: From the standard to the extraordinary × Search Clear Filter by: Clear all Method(s) High Performance Liquid Chromatography/ Tandem Mass Spectrometry (LC-MS/MS) (1) Sample Type Blood (1) Serum or Plasma (1) (-) Urine (1) Test Area Therapeutics (1) Test Category (-) Analgesics (1) NPS/Designer Drugs (2) Sedative/Hypnotics (2) Test Sub-Category Antipyretics (2) (-) Opiates/Opioids (1) Test Test Name 9103U Alfentanil Screen, Urine